plural of 14

(sports, snowboarding, skiing) Clipping of 1440. (1440° spin)

(physics) a radioactive isotopes of carbon, ¹⁴₆C, having six protons and eight neutrons; it is used in radiocarbon dating

(physics) A stable isotope of nitrogen, ¹⁴₇N, having seven protons and seven neutrons; it accounts for over 99% of the natural element.

Alternative form of 14-18; World War I

World War I

Under the Whyte notation system, a steam locomotive with four leading wheels in a leading truck, fourteen driving wheels (seven axles) in a rigid frame, and four trailing wheels in a trailing truck.

plural of 4-14-4

World War I